JP created ATLAS-4370:
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Summary: Persist Metrics for user to retrieve Metrics info at a
past timestamp
Key: ATLAS-4370
URL: https://issues.apache.org/jira/browse/ATLAS-4370
Project: Atlas
Issue Type: New Feature
Components: atlas-intg, atlas-webui
Affects Versions: 2.1.0
Reporter: JP
# Create new typeDef of MetricsStat to persist Metrics entity.
# Create MetricsStat class to keep Metrics' info about collectionTime,
metricsId and ttl; create MetricsStatsDTO class to transfer states between
MetricsStat and AtlasEntity when it is saved or retrieved from JanusGraph.
# Create MetricsStatMin to represent the minimal information about persisted
MetricsStat.
# Create job scheduler with configurable metrics.persist.schedule (default as
7 days) & metrics.ttl.hours (default as 1 hr interval) to save a metrics entity
to db and to sweep through all metrics entities and clear the ones whose
time-to-live (ttl) has past.
# Update MetricsService to implement REST APIs in AdminResource to realize api
calls of:
** Get all persisted metricsStats, with boolean variable to choose its return
type as a list of metricsStats with specific details, or with minimal
information;
** Get a specific metricsStat by collectionTime
# Update MetricsService to include helper methods of:
** Save a metricsStat to db
** Get or delete a persisted metricsStat by collectionTime
** Purge metricsStats whose ttl has past
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